Induction-valve.



No. 650,97I. Patented lune 5, |900.

W. R. GREEN.

HNDUGTION VALVE.

Application filed Dec. 14, 1898,;

THF. Nonms PETERS co, Pr-.uTuLl-mq, wAsumsToN. n. c.

Patented lune 5, |900.

No. 650,97I.

W. AH. GREEN.v

INDUCTION VALVE.

(Application filed Dec. 14, 1898.)

2 Sheets-Sheet 2.

(N0 Model.)

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TN: mams mins co. FNQYOALITHQ, WASHINGTON. u c

` NITE-.D STATES PATENT FEICE.

VILLRD R. GREEN, OF DENVER, COLORADO.

INDUCTION-VALVE.

SPECIFICATION forming part of Letters Patent No. 650,971, dated June 5,1900.

Application filed December 14, 1898. Serial No. 699,281. (No model.)

To @ZZ whom, t may concern:

Be itknown that LWILLARD REED GREEN, a citizen of the United States,residing at Denver, Arapahoe county, State of Colorado, have inventedcertain new and .useful Improvements in Induction-Valves,of which theengine to balance and actuate the valves' and may be either-with orwithout the assistance and coperation of the weight or pressure of theatmosphere.

The invention consists in so using said pressure and of mechanical partsand arrangements for accomplishing that object, and I preferably employparts or pistons of different areas or acting under different relativepressures of either the same or different mediums with means foralternately or successively applying said pressure to alternately orsuccessively balance and unbalance said parts and the main or inductionvalve controlling the supply or passage of the working medium to anengine or other mechanism, whereby said valve is seated and unseated bythe pressure of said medium controlled through the action of saidmechanism.

One embodiment of my invention, and a preferable form, is set forth inthe drawings forming a part of this specificatiomin which- Figure lrepresents an elevation, partly in section, of said form. Fig. 2represents another form of mechanism for actuating the cylinder S, shownin Fig. l. Fig. 3 is a plan View showing a cylinder 8 dividedlongitudinally, taken on the line a a, Fig. 2. i

In the drawings, 1 represents a cylinder of an engine. 2 is a steam orother chest or closed pressure-chamber thereon for the ad- .mission ofthe working medium tovsaid cylinder. S'is the port connecting said chestwith saidcylinder. 1

4 is the port admitting the working medium to the chest 2.

5 is the ind notion-Valve controlling the port o. This valve may be ofthe piston form or may be .a puppet or other form of valve. Eitherattached to the top of the valve 5 or placed in any desired relationthereto and connected therewith isa piston 5a, of larger area than thebottom or the seating area of said valve 5 in the port 3. It is obviousthat the valve 5 and the piston a may be made integraler may be in twoseparate parts and that the top and bottom surfaces of said valve andsaid piston may be at anydistance apart as desired.

6 isa piston connected with the valve 5 by the rod 7.

8 is a cylinder, open at both ends, adapted to fit around the topportionof the valve 5 and the piston and to permit longitudinal movementof the piston 5 therein, so that said piston may slide independently ofsaid cylinder longitudinally therein and said cylinder may move pastsaid piston'as desired and may be brought into contact with the walls ofthe chest 2 about the seat of said valve.

The upper portion of the chest 2 is formed to constitute or bears uponits Wall a cylinder 9, in Vwhich the piston 6 moves. Said cylinder maybe above or upon the chest and may be either independent thereof orintegral therewith. The cylinder 9 is provided with a pipe connection l0or other means, as desired, for regulating the volume and pressure ofthe air in the top of said cylinder, and the top of said piston 9 mayhave a connection open to the atmosphere, or the air therein may beconfined or put under any degree of compression desired by any wellknown means, and the air in said cylinder may be used to assist inactuating or causing longitudinal movement to the piston 6 and valve 5or in cushioning or limiting the travel of said valve.

Any well-known means may be used to ac- Ytuate or cause longitudinalmovement of the cylinder S-as, for instance, lever-arms 1l, attached tothe rod or shaft 15, having a bearing 16 and attached to meansoperatively connected with the engine-shaft for actuating or rockingsaid shaft. Said lever-armsv engage with projections upon the collar 13,sliding` on the rod 7 and having arms 14, attached to the cylinder 8,whereby the cylinder 8 is IOO callsed to rise alld fall by the turningof the rod l5. This may be operatively eolllleeted with the engine-shaftor witll any otller lllecllanism.

The cylinder 8 lllay be caused to come in contact witll the floor orwall of the chest 2, or a rilll or slloulder 2O lllay bc forlned orlnade around the seat l.) of the valve 5, adapted to lit the illllerwalls of the cylinder S alld to be illelosed or surrounded by saidcylinder and wllell so inclosed to close such cylinder at the elld soill Contact with said riln, whereby the working lllediulll ill the chest2 can ollly ellter said cylinder alld exert pressure upoll the piston 5through the opposite or open elld of the cylinder S. 'lhe riln orshoulder 2U lllay be made independent of or illtegral witll the walls ofthe chest 2 alld preferably projects su ftieicn tly from said wall toperlllit the cylillder S to pass over alld ellcirclc the end or edge ofsaid rim witllout ci'llllingillto contact witll the wall of the cllest 2proper, so tllat said cylinder relllains substantially a Heatingcylinder balanced at all tillles ill the working medium.

Arms or guides 3G may be formed upon or attached to the chest 2 witllsuitable bearings to act as guides to the cylinder S, alld lllgs orstops 37 may he placed upon the walls of the chest 2 or elsewhere tolimit the travel of the cylinder S or to serve as bearings for thethrust thereof.

'lllc operation is as follows: Assn ming the ellgine to be working undera pressure of one hundred pounds, there will exist a pressure of onehundred pounds ill the cllest 2. Assuming the area of valve 5 at theseat lil thereof to be equal to olle square illcll, it will tllereforellave a pressure of one hundred pounds thereon. Assuming the pistoll lto be of lalger area tllan the seat of valve 5 and to have a pressureof, say, one hundred and ten pounds of said working medium thereon, thepressure of the working lnediulll will tllerefore cause all upwardmovement of the piston (i ill the cylillder t), thereby lifting thevalve 5 from its seat through the action of the rod 7, connecting saidpiston with said valve. Hence, so far as the aetioll of valve 5 andpiston (5 alolle is concerlled, valve 5 would always stand open underthe pressure of the working lllediulll upon pistoll 6. Steam or otllerworking medium will therefore be adlnitted from the cllest 2 to thecylinder l through the port When desired to close said port, thecylinder S, inelosing the piston 5", is caused by the movement of thearms ll to move to a contact witll the floor of the chest 2 or with theliln 2t), surrounding the seat of valve 5, thus forming acllamber illthe lower portion of cylinder 8. Thus the piston 5, moving in cylinder8, is open to the further actioll of the workillg lnediuln only upon thetop of said pistoll through the open elld of cylinder S. As the area ofthe piston 5 is greater tllan tile arca of valve 5 or than that of thepiston G, it will carry a greater pressure thereon tllall piston 6 alldwill cause the valve 5 to be seated ill the port 3 against theresistance of the pressure upon pistoll G. This will occur whenever theactioll of the eylillder 8 by coming ill contact with the walls of thechest transfers the controllillg area alld pressure to the piston 5nalld alternately to piston t5 when moving from contact with the walls ofsaid cllest.

For a new charge of working lllediulll or steam the operatiolls al'erepeated. 'llle adlllissioll of the working lnediulll totheenginecylinder l is permitted by raising the cylinder S through theoperation of lllecllallislll actuating the arm 1l alld operativelycollllected with the engine-shaft, whereby the movement of the cylinder8 is regulated to be at any poillt of cut-off desired. Upon movingcylillder 8 away from contact with the floor or parts of the chestsurrounding the seat of valve 5 the piston 5"L is balanced by the equalpressure of the working medium upon its two sides, alld the pistoll 6being of greater area tllan the seat of valve 5 at once lifts valve 5,permitting the inflow of the working lnediulll below the elld ofcylinder` S and through valve 5. This continues so long as cylillder Srelnaills raised alld to any poillt of cut-off desired. It will thus beseen that the action of the valve 5 through the pistons 51L and Gresults from alld is controlled by the movement of the cylillder 8,wllicll may he regulated to be ill any relation to the movements of theengine-shaft desired and at any point of cut-olf. As the cylinder S issubstantially balanced in the working mediuln, relatively small powerwill be rcquired to actuate said cylinder. rllle friction thereof lnaybe reduced to a minimum. As the efiiciency of cylinder S depends uponthe completion of its circuit around pistoll 5 alld the closing of itscontact at one end with the walls of the ellest, it will be seen thatany means employed to aecolllplisll tllese objects will fall within theinvention. One method of actuating said cylinder and of applyingthefunctions thereof, which may eifel' solne advantages, is set forth inFig. In this illstance the cylinder S is shown cut ill halveslongitudinally. Thehalf 8 may be fixed upoll the floor of the chest 2alld the half S be a'rranged to move laterally away from and to the half8, or both parts lnay be moved, if desired. By this means the sameoperation and effect are produced upon the piston 5 as in the illstancementioned of lnovillg said cylinder longitudinally. Ally known means maybe used to lnove the parts of said cylinder illto and out of contactwith each other. Mechanism for the lateral lnovelllent is set forth inFigs. 2 and 3, 2l beinga cylinder placed longitudinally with themovement ofsaid parts of cylinder S, to which it is operativelycollnected tllrough the piston 22, movillg ill cylinder 21, and the rod23 connected with said part of cylinder S alld passing tllrougll thepistoll 22 alld the wall 2t of chest IOO los

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2. One side ofthe cylinder 2l maybe eX- hausted of air, or the airtherein may be put under any desired compression, and the other end ofsaid cylinder may be under the pressure of the` operating medium inchest 2, so that the power of the mechanism applied to actuatethe rod 23may be reduced to a minimum and the pressureof the workingmedium or ofthe atmosphere may be used to cushion the contact of the parts ofcylinder S.

I claim and desire to secure by Letters Patcntl. The combination ofavalve, a cylinder, a piston fitting said cylinder and connected withsaid valve, a port closed and opened by said valve, a chest above thepiston and cylinder, and means for admitting a working mediumcontinuously thereto, and .means whereby to control the flow oftheworking medium to said cylinder below the piston, substantially as setforth.

2. In valves, a valve made integral with or attached to a piston oflarger area than'the face of said valve, a seat for said valve,acylinder adapted to fit and coperate with said,

piston, and means .for applying the pressure of the working mediumconstantly to one side and alternately to kboth sides of said piston,for either actuating or for balancing said piston and said valve,substantially as set forth.

A valve, a piston attached to the stem of said valve a cylinder adaptedto fit and to coperate with said piston and means for applying thepressure of theworking medium alternately to one and to both sides ofsaid piston, for actuating and also for balancing said pist-on and saidvalve, substantially as set forth.

4. A valve, a piston attached' to said valve, a movable cylinder adaptedto tit and coperate with said piston, in combination with meansfoi-moving said cylinder longitudinally in directions parallel with themovements of saidtvalve, whereby the end of said cylinder is alternatelyclosed and opened and the pressure of the working medium is applied toactuate and to balance said piston and to move said valve.

5. A valve, a piston attached to the stem of said valve a cylinderadapted to fit and cooperate with said piston, means for applying thepressure of the working medium to one or to both sides of said pistonfor either'balancing or varying the pressure to produce one of thereciprocating movements ofv said piston,in combination with mechanicalmeans for producing one of the reciprocating movements of said piston,whereby said valve is seated and unseated, substantially as set forth. l

G. A valve, a piston attached to the Istem of said valve a scat for saidvalve, a piston operatively connected with said first piston,independent cylinders adapted to tit and cooperate with said pistonsrespectively, in combination with means for varying the effect of thepressure of the working medium alter- 4nately upon said two pistons,whereby said -pistons are given a reciprocating movement and said valveis seated and unseated, substantially as set forth. l

7. A valve,a piston attached to the stem of said valve a seat for saidvalve, a movable cylinder adapted to fit and coperatewith said piston, asecond piston operatively connected with said rst piston, a fixedcylinder adapted to t and coperate with said second piston, and avalve-chest in combination with means for moving said movable cylinderlongitudinally into and out of contact with a wall of the chest, wherebythe end of said movable cylinder is alternately closed and opened andthe pressure of the working medium is applied alternately to balance andto actuate the piston therein alternately with and against theresistance of said second piston and said pistons coperate to seat andvunseat said valve.

8. A valve, a piston attached to the stem` of said valve. a cylinderadapted to tit and receive the movement therein of said piston, saidcylinder being closed at its upper end and containing in said upper endan elastic medium, as a gas or fluid, for cushioning or limiting themovement of said piston therein, in combination with means forregulating or partially releasing the pressure of said piston upon saidelastic medium; whereby the opening or upward movement of said valve iscushioned.

9. The combination of a valve, made integral with or attached to apiston of larger area than the face of said valve, a seat for saidvalve, a movable cylinder adapted to fit and coperate with the movementsof said piston and to be moved to a contact with or to surround saidseat wherebya chamber is formed below the piston and the working mediumadmitted to or excluded therefrom, substantially as described.

10. A valve, a piston attached to the stem of said valve, a seat forsaid valve, a movable cylinder adapted to fit and coperate with saidpiston, a second piston operatively connected with said first piston, afixed cylinder adapted to fit and coperate with said second piston, incombination with means for moving said movable cylinder; whereby thechamber inclosed by said cylinder and below the first piston isalternately closed and opened and the pressure of the working medium isappli-ed alternately to balance and to actuate the piston thereinalternately with and against the resistance of said second piston andsaid pistons coperate to seat and unseat said valve.

In witness whereof I have hereunto set my hand, in the presence of twoWitnesses, this 28th day of November, 1898.

WILLARD R. GREEN.

WVitnesses:

LEE D. CRAIG, JOHN WARD NYE.

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